to be clear, ukraine went ahead and did this anyway. And then the US lifted restrictions on this kind of stuff (idk if it was completely, but they did do it)
It's not really arbitrary, it's just geopolitics being geopolitics, ukraine and the rest of europe showed that russia would bluff, and we're supporting them more now.
I guess it should make sense coming from a partially republican legislature that doesn't even believe in the ukraine war to begin with.